We can do better.
B-trees force you to pre-commit to a query shape, which is at odds with the idea of ad-hoc Top K queries.
the difference is that every operation works on decision trees instead of individual nodes, and the combining operations (union, intersection, complement) know how to merge two trees by splitting on shared conditions. the result is that you compute one derivative per state instead of let’s say, 256 for a byte, and the minterms fall out for free.，推荐阅读新收录的资料获取更多信息
function collectIterative(): Array {，这一点在新收录的资料中也有详细论述
DigitalPrintPrint + Digital
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